import java.util.HashMap;

/**
 * Created by 510 on 2018/4/8.
 */
public class HardDisk {
    int amount;
    int getAmount() {
        return amount;
    }
    HardDisk(int amount) {
        this.amount = amount;
    }
    public String toString() {
        String str = super.toString();
        return str;
    }
    void equals(){}
}
